November 2019 - Msepostdoc-list

Seminar Notice for Andres Villa Pulido's Ph.D. Final Exam. Monday, Nov. 18, at 10:30 a.m., in ARMS B071
by Son, Rosemary E 16 Nov '19

16 Nov '19

Please consider attending the following: MATERIALS ENGINEERING SEMINAR “Design and Characterization of a PEO-based Polymer Composite Electrolyte Embedded with Doped-LLZO: Role of Dopant in Bulk Ionic Conductivity” By Andres A. Villa Pulido Purdue MSE Ph.D. Final Exam Advisors: Professor E. Ernesto Marinero and Professor David F. Bahr ABSTRACT Ionic conductivity of solid polymer electrolytes (SPEs) can be enhanced by the addition of fillers, while maintaining good chemical stability, and compatibility with popular cathode and anode materials. Additionally, polymer composite electrolytes can replace the flammable organic liquid in a lithium-ion battery design and are compatible with lithium metal. Compatibility with Li-metal is a key development towards a next-generation rechargeable Li-ion battery, as a Li-metal anode has a specific capacity an order of magnitude higher than LiC6 anodes used today in everyday devices. The addition of fillers is understood to suppress the crystalline fraction in the polymer phase, increasing the ionic conductivity, as Li-ion conduction is most mobile through the amorphous phase. A full model for a conduction mechanism has not yet constructed, as there is evidence that a semi-crystalline PEO-based electrolyte performs better than a fully amorphous electrolyte. Furthermore, it is not yet fully understood why the weight load of fillers in PCEs can range from 2.5%wt to 52.5%wt, in order to achieve high ionic conductivity (~10-4S/cm). This work seeks to investigate the conduction mechanism in the PCE through the use of doped-Li7La3Zr2O12 as a filler and analysis of the PCE microstructure. In this work, a solid-state electrolyte, doped-Li7La3Zr2O12 (LLZO) was synthesized via a sol-gel method, and characterized. The effect of doping and co-doping the Li, La and Zr sites in the LLZO garnet was investigated. A PEO-based polymer composite electrolyte (PCE) was prepared by adding bismuth doped LLZO (Li7-xLa3Zr2-xBixO12) as a filler. The bismuth molar ratio was changed in value to study the dopant role on the bulk PCE ionic conductivity, polymer phase crystallinity and microstructure. Results suggest that small variations in dopant can determine the optimal weight load of filler at which the maximum ionic conductivity is reached. By understanding the relationship between filler properties and electrochemical properties, higher performance can be achieved with minimal filler content, lowering manufacturing costs a solid-state rechargeable Li-ion battery. Date: Monday, December 18, 2019 Time: 10:30 A.M. Place: ARMS B071

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Seminar Notice for Andres Villa Pulido's Ph.D. Final Exam. Monday, Nov. 18, at 10:30 a.m., in ARMS B071
by Son, Rosemary E 15 Nov '19

15 Nov '19

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Design and Characterization of a PEO-based Polymer Composite Electrolyte Embedded with Doped-LLZO: Role of Dopant in Bulk Ionic Conductivity" By Andres A. Villa Pulido Purdue MSE Ph.D. Final Exam Advisors: Professor E. Ernesto Marinero and Professor David F. Bahr ABSTRACT Ionic conductivity of solid polymer electrolytes (SPEs) can be enhanced by the addition of fillers, while maintaining good chemical stability, and compatibility with popular cathode and anode materials. Additionally, polymer composite electrolytes can replace the flammable organic liquid in a lithium-ion battery design and are compatible with lithium metal. Compatibility with Li-metal is a key development towards a next-generation rechargeable Li-ion battery, as a Li-metal anode has a specific capacity an order of magnitude higher than LiC6 anodes used today in everyday devices. The addition of fillers is understood to suppress the crystalline fraction in the polymer phase, increasing the ionic conductivity, as Li-ion conduction is most mobile through the amorphous phase. A full model for a conduction mechanism has not yet constructed, as there is evidence that a semi-crystalline PEO-based electrolyte performs better than a fully amorphous electrolyte. Furthermore, it is not yet fully understood why the weight load of fillers in PCEs can range from 2.5%wt to 52.5%wt, in order to achieve high ionic conductivity (~10-4S/cm). This work seeks to investigate the conduction mechanism in the PCE through the use of doped-Li7La3Zr2O12 as a filler and analysis of the PCE microstructure. In this work, a solid-state electrolyte, doped-Li7La3Zr2O12 (LLZO) was synthesized via a sol-gel method, and characterized. The effect of doping and co-doping the Li, La and Zr sites in the LLZO garnet was investigated. A PEO-based polymer composite electrolyte (PCE) was prepared by adding bismuth doped LLZO (Li7-xLa3Zr2-xBixO12) as a filler. The bismuth molar ratio was changed in value to study the dopant role on the bulk PCE ionic conductivity, polymer phase crystallinity and microstructure. Results suggest that small variations in dopant can determine the optimal weight load of filler at which the maximum ionic conductivity is reached. By understanding the relationship between filler properties and electrochemical properties, higher performance can be achieved with minimal filler content, lowering manufacturing costs a solid-state rechargeable Li-ion battery. Date: Monday, December 18, 2019 Time: 10:30 A.M. Place: ARMS B071

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Seminar Reminder for Xingyao Gao's Ph.D. Final Exam. Monday, November, 18, at 9:00 a.m., in ARMS 3115. "Tunable Multifunctionalities Achieved in Oxide-based Nanocomposite Thin Films"
by Son, Rosemary E 15 Nov '19

15 Nov '19

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Tunable Multifunctionalities Achieved in Oxide-based Nanocomposite Thin Films" By Xingyao Gao Purdue MSE Ph.D. Final Exam Advisor: Professor Haiyan Wang ABSTRACT Functional oxides indicate the oxides with functionalities, which are recognized as the potential next-generation electronic materials due to their wide variety of crystal structures and properties. Over the past decades, driven by the development of fabrication and device manufacture techniques, more functional oxides with varies applications have been discovered: The biocompatible oxide Al2O3 have been extensively studied in biomedical applications. The ferroelectric oxides with high dielectric permittivities, such as BaTiO3 (BTO), LiNbO3 and Pb(Zr, Ti)O3 (PZT) have been widely used in capacitors, sensors and thermistors. The transparent conducting oxide ZnO and TiO2 have been studied in solar cells. The single-phase multiferroic BiMnO3 and BiFeO3 can be used in data storage devices. The superconducting YBa2Cu3O7 (YBCO) and FeSe have been utilized in high temperature superconductors. The lithium-based oxides LiMn2O4 and LiCoO2 have been extensively studied as the cathode for lithium ion batteries. In this work, we systematically investigated the tunable multifunctionalities in oxide-based nanocomposite thin films. Four first-time reported nanocomposite systems have been demonstrated with vertically aligned nanocomposite or multilayered structures. By controlling the deposition frequency, film composition and the element in the system, tunable ferromagnetic, ferroelectric, multiferroic, magnetotransport and optical properties have been achieved. The multifunctionality study on these oxide nanocomposite thin films has shown great potential in real life applications including nanoscale memory devices, sensors, spintronics, data storage devices etc. Date: Monday, November 18, 2019 Time: 9:00 A.M. Place: ARMS 3115

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Snacks in the Break Room
by Ku Blanco, Aury Y 15 Nov '19

15 Nov '19

Hi all, Your assistance would be appreciated in eating the remaining seminar snacks! Door will be open for another few minutes 😊 Thanks, Aury Ku Administrative Assistant Purdue University School of Materials Engineering Neil Armstrong Hall of Engineering 765/494-4100 akublanc(a)purdue.edu<mailto:staceyl@purdue.edu> [https://www.purdue.edu/brand/images/Purdue_University-150_Years_of_Giant_Le…]

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MSE 690 Tevis Jacobs Nov 15, 3:30 PM, ARMS 1010 (Seeking Tour Guides for 10:45 am)
by Ku Blanco, Aury Y 15 Nov '19

15 Nov '19

Good Morning, Students, Please contact me if any of you are able to help us out with an ARMS Labs tour for Prof. Jacobs today from 10:45 am-11:30 am. Chelsea and I would very much appreciate it! 😊 Forwarding on behalf of Prof. Chelsea Davis, please plan to attend: [cid:image002.png@01D59942.4FBE4AE0] Thank you, Aury Ku Administrative Assistant Purdue University School of Materials Engineering Neil Armstrong Hall of Engineering 765/494-4100 akublanc(a)purdue.edu<mailto:staceyl@purdue.edu> [https://www.purdue.edu/brand/images/Purdue_University-150_Years_of_Giant_Le…]

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Seminar Reminder for Alejandro Figueroa's Preliminary Exam, Friday Nov. 15, at 8:00 a.m., in ARMS 1021 "Irradiation Induced Grain Refinement in Low Temperature U-Mo Metallic Fuels"
by Son, Rosemary E 14 Nov '19

14 Nov '19

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Irradiation Induced Grain Refinement in Low Temperature U-Mo Metallic Fuels" By Alejandro L. Figueroa Purdue MSE Preliminary Exam Advisor: Professor Maria A. Okuniewski ABSTRACT Uranium molybdenum based fuels are currently being qualified as a replacement for high enrichment fuels, in high performance research and test reactors, as a global threat reduction effort. Irradiation induced grain refinement is currently being investigated in low operating temperature (<0.4Tm) nuclear fuels due to its association to an increase in swelling rates. Uranium molybdenum alloys are of interest due to their accumulation of fission gasses into an ordered nano-bubble superlattice. The superlattice has been observed to suppress the formation of the defect structures typically associated with irradiation induced grain refinement. This behavior limits the ability to correlate the observed mechanisms with historical data. Understanding the underlying mechanisms of irradiation induced grain refinement will aid in fuel performance by tailoring fuel design to suppress the transformation, and accounting for the formation in operating codes. This review discusses the current efforts in characterizing the transformation mechanism, its effect on the microstructure, and modelling of the phenomenon. Date: Friday, November 15, 2019 Time: 8:00 A.M. Place: ARMS 1021

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FW: ULVAC Ellipsometer Demonstration - Nov. 21 @ 1:30pm in BNC1201
by Stacey, Lisa A 12 Nov '19

12 Nov '19

Forwarding on behalf of Jaime Turner, Birck Nanotechnology Center: Lisa Stacey Administrative Assistant to the Department Head Purdue University School of Materials Engineering Neil Armstrong Hall of Engineering 765/494-4095 staceyl(a)purdue.edu [https://www.purdue.edu/brand/images/Purdue_University-150_Years_of_Giant_Le…] ________________________________ [cid:image003.png@01D5994B.CC6892E0] Ron Reger Engineering Manager Birck Nanotechnology Center | Room 2289 | Office: 765.494.6667 | Email: rreger(a)purdue.edu<mailto:rreger@purdue.edu> Wiki: https://wiki.itap.purdue.edu/display/BNCWiki iLabs: https://purdue.ilabsolutions.com/homepage/ ______________________________________________________________ [Purdue_University-150_Years_of_Giant_Leaps.png (300Ã66)] www.purdue.edu/giantleaps<http://www.purdue.edu/giantleaps>

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MSE 690 Tevis Jacobs Nov 15, 3:30 PM, ARMS 1010
by Ku Blanco, Aury Y 12 Nov '19

12 Nov '19

Forwarding on behalf of Prof. Chelsea Davis, please plan to attend: [cid:image002.png@01D59942.4FBE4AE0] Thank you, Aury Ku Administrative Assistant Purdue University School of Materials Engineering Neil Armstrong Hall of Engineering 765/494-4100 akublanc(a)purdue.edu<mailto:staceyl@purdue.edu> [https://www.purdue.edu/brand/images/Purdue_University-150_Years_of_Giant_Le…]

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Seminar Notice for Xingyao Gao's Ph.D. Final Exam. Monday, November, 18, at 9:00 a.m., in ARMS 3115. "Tunable Multifunctionalities Achieved in Oxide-based Nanocomposite Thin Films"
by Son, Rosemary E 11 Nov '19

11 Nov '19

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Tunable Multifunctionalities Achieved in Oxide-based Nanocomposite Thin Films" By Xingyao Gao Purdue MSE Ph.D. Final Exam Advisor: Professor Haiyan Wang ABSTRACT Functional oxides indicate the oxides with functionalities, which are recognized as the potential next-generation electronic materials due to their wide variety of crystal structures and properties. Over the past decades, driven by the development of fabrication and device manufacture techniques, more functional oxides with varies applications have been discovered: The biocompatible oxide Al2O3 have been extensively studied in biomedical applications. The ferroelectric oxides with high dielectric permittivities, such as BaTiO3 (BTO), LiNbO3 and Pb(Zr, Ti)O3 (PZT) have been widely used in capacitors, sensors and thermistors. The transparent conducting oxide ZnO and TiO2 have been studied in solar cells. The single-phase multiferroic BiMnO3 and BiFeO3 can be used in data storage devices. The superconducting YBa2Cu3O7 (YBCO) and FeSe have been utilized in high temperature superconductors. The lithium-based oxides LiMn2O4 and LiCoO2 have been extensively studied as the cathode for lithium ion batteries. In this work, we systematically investigated the tunable multifunctionalities in oxide-based nanocomposite thin films. Four first-time reported nanocomposite systems have been demonstrated with vertically aligned nanocomposite or multilayered structures. By controlling the deposition frequency, film composition and the element in the system, tunable ferromagnetic, ferroelectric, multiferroic, magnetotransport and optical properties have been achieved. The multifunctionality study on these oxide nanocomposite thin films has shown great potential in real life applications including nanoscale memory devices, sensors, spintronics, data storage devices etc. Date: Monday, November 18, 2019 Time: 9:00 A.M. Place: ARMS 3115

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BD's Technology Leadership Development Program
by Ku Blanco, Aury Y 07 Nov '19

07 Nov '19

Forwarding on behalf of Kevin Olson at BD: Hi Aury, My name is Kevin Olson, and I'm a senior engineer in the Technology Leadership Development Program at BD (a large medical technology company). The TLDP is an R&D rotational program designed to develop high-potential candidates who have a thesis-based MS or PhD into future technical leaders in the organization. It really is a great program that I hope your students are aware of. Would you consider distributing the attached flyer to the graduate students and postdocs in your department and encouraging them to apply at this link<https://jobs.bd.com/job/franklin-lakes/technology-leadership-development-pr…> if they're interested? The fall application deadline is Wednesday, November 13th, and the spring deadline will be near the end of March. We generally encourage candidates to apply 6 months - 1 year before graduation for optimal timing. I would appreciate it! Kind regards, Kevin [cid:image001.jpg@01D5941A.FB99AA30] Kevin Olson, PhD Senior Engineer, TLDP BD Medical-Diabetes Care Parenteral Sciences bd.com<http://www.bd.com/> ******************************************************************* IMPORTANT MESSAGE FOR RECIPIENTS IN THE U.S.A.: This message may constitute an advertisement of a BD group's products or services or a solicitation of interest in them. If this is such a message and you would like to opt out of receiving future advertisements or solicitations from this BD group, please forward this e-mail to optoutbygroup(a)bd.com<mailto:optoutbygroup@bd.com>. [BD.v1.0] ******************************************************************* This message (which includes any attachments) is intended only for the designated recipient(s). It may contain confidential or proprietary information and may be subject to the attorney-client privilege or other confidentiality protections. If you are not a designated recipient, you may not review, use, copy or distribute this message. If you received this in error, please notify the sender by reply e-mail and delete this message. Thank you. ******************************************************************* Corporate Headquarters Mailing Address: BD (Becton, Dickinson and Company) 1 Becton Drive Franklin Lakes, NJ 07417 U.S.A.

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